Elasticsearch 7.8.0 Release Highlights and Breaking Changes
Elasticsearch 7.8.0 introduces new aggregation capabilities, composable index template simulation, geo enhancements, SQL date‑time functions, and several breaking changes such as optimized value_count aggregation and mapping restrictions, providing a comprehensive update for search and analytics workloads.
Elasticsearch 7.8.0 has been released with a range of new features, enhancements, and breaking changes.
New Features
Aggregations
Support for Student t-test aggregation #54469 (issue #53692)
Added filter support to t-test aggregation #54980 (issue #53692)
Histogram field type now supports Sum aggregation #55681 (issue #53285)
Histogram field type now supports ValueCount and Avg aggregations #55933 (issue #53285)
Features/Indices APIs
Added composable index template simulation API _index_template/_simulate_index/{name} #55686 (issue #53101)
Geo
Added geo_bounds aggregation support for geo_shape #55328
Added geo_shape support to geotile_grid and geohash_grid #55966
Added geo_shape support to geo_centroid aggregation #55602
Added new point field #53804
SQL
Implemented DATETIME_FORMAT function for formatting date/time #54832 (issue #53714)
Implemented DATETIME_PARSE function for parsing strings #54960 (issue #53714)
Enabled scripting inside aggregations #55241 (issues #29980, #36865, #37271)
Breaking Changes
Aggregations
Optimized value_count aggregation #54854
Features/Indices APIs
Added auto‑create operation #55858
Mapping
Prohibited changing the enabled flag on root mappers #54463 (issue #33933)
Fixed updating nested fields include_in_parent/include_in_root #54386 (issue #53792)
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